Another member sent this to me and I thought it was an interesting listing. Not sure all the criteria that they use, but it can all be found on SWFA's website.

2008 Riflescope Rating Scale

10 - Swarovski Z6, Zeiss Victory
9 - Kahles C - CL & CSX, Schmidt & Bender
8 - Kahles KX, U.S. Optics, Swarovski PH & American, X.O.T.I.C., Zeiss Classic
7 - Bushnell Elite 6500, Leupold VX-7, Nightforce, IOR Valdada
6 - Bushnell Elite 4200, Nikon Monarch & Monarch X, Zeiss Conquest
5 - Leupold Mark 4 VX III & VX-L, Nikon Monarch Gold & Titanium, Sightron SIII
4 - Burris Black Diamond Signature Select XTR & Euro Diamond, Meopta, Pentax Lightseeker, Super Sniper, Trijicon Accupoint, Weaver Grand Slam
3 - Bushnell Elite 3200, Leatherwood, Leupold VX-II, Millet, Nikon Buckmaster, Sightron SI & SII, Simmons Aetec, Vortex
2 - Burris Fullfield II & Timberline, Leupold Rifleman & VX-I, Mueller, Nikon ProStaff, Simmons, Swift
1 - Barska, BSA, Tasco
0 - ATN, Leapers, NcStar

Ratings from a bunch of different factors from SWFA. You can find this on their site.